Tropical Storm Lorenzo starts to unravel

OUTLOOK: Although it has maintained its strength for the past few hours, Tropical Storm Lorenzo is starting to be ripped apart by wind shear. It's expected to dissipate within the next three days.

WHAT FLORIDA CAN EXPECT: Lorenzo poses no threat to land, as it is aiming out to sea.

PARTICULARS: Like most of this season's tropical systems, Lorenzo is forecast to be short-lived.

As an indicator how subdued the tropics have been so far, every system this year - except Hurricane Humberto - has been a named storm for 3.5 days or less, according to Colorado State University climatologist Phil Klotzbach.

Considering there have been 12 named storms, which existed a total of 35 days, that works out to an average lifespan of 2.9 days per storm.

Only 2007, when 15 named storms survived an average of 2.5 days, saw systems with shorter lifespans, Klotzbach said.